v3.20.4
Related Party Transactions - Additional Information (Detail) - USD ($)
1 Months Ended 12 Months Ended
Feb. 19, 2020
Jun. 30, 2020
Feb. 29, 2020
May 31, 2019
Nov. 30, 2018
Dec. 31, 2020
Related Party Transaction [Line Items]            
Common stock shares issued 15,200,000          
Issuance of common stock public offering price           $ 12,269,000,000
Chief Executive Officer [Member]            
Related Party Transaction [Line Items]            
Common stock shares issued     65,185 514,400    
Issuance of common stock public offering price     $ 10,000,000 $ 25,000,000    
Chief Executive Officer [Member] | Indemnification Agreement [Member]            
Related Party Transaction [Line Items]            
Interim term   90 days        
Management fee   $ 3,000,000        
Percentage of further discounted on market-based premium for market quote   50.00%        
Chief Executive Officer [Member] | Indemnification Agreement [Member] | Maximum [Member]            
Related Party Transaction [Line Items]            
Liability insurance policy with an aggregate coverage limit   $ 100,000,000        
Chief Executive Officer [Member] | Private Placement [Member]            
Related Party Transaction [Line Items]            
Common stock shares issued         284,575  
Issuance of common stock public offering price         $ 20,000,000  
Board of Directors [Member]            
Related Party Transaction [Line Items]            
Common stock shares issued     6,250      
Issuance of common stock public offering price     $ 1,000,000      
Directors' and Officers' [Member] | Indemnification Agreement [Member]            
Related Party Transaction [Line Items]            
Liability insurance policy with an aggregate coverage limit   $ 100,000,000